About Dictionary Objects and Entries (AutoLISP)

 
 
 

A dictionary is a container object, similar to symbol tables.

Dictionaries are stored in the drawing’s named object dictionary, which is the root of all non-graphical objects in a drawing, or as an extension dictionary attached to an object. Each drawing can contain different dictionaries, so a routine should not expect that a specific dictionary might exist in a drawing. The dictionaries in a drawing’s named object dictionary can be accessed using namedobjdict, which returns an entity name. Use entget to access the entity list that represents all of the dictionaries in the drawing.

The following rules apply to dictionary objects:

Dictionary entries can be queried with the dictsearch and dictnext functions. Each dictionary entry consists of a text name key plus a hard ownership handle reference to the entry object. Dictionary entries may be removed by directly passing entry object names to the entdel function. The text name key uses the same syntax and valid characters as symbol table names. A key name can be changed using the dictrename function.

The following example code lists each of the dictionaries in the drawing’s named object dictionary and their entries:

(defun c:ListDictionaries ( / ed ed1)
  (prompt "\nDictionaries in current drawing: ")
  (foreach ed (entget (namedobjdict))
    (progn
      (cond ((= (car ed) 3)
        (prompt (strcat "\n" (cdr ed))))
            ((= (car ed) 350)
        (progn
          (foreach ed1 (entget (cdr ed))
            (if (= (car ed1) 3)
              (prompt (strcat "\n  " (cdr ed1)))
            )
          )
        ))
      )
    )
  )
 (princ)
)

The following is an example of the output you might see in Text History window after c:ListDictionaries is executed.

Dictionaries in current drawing:
ACAD_CIP_PREVIOUS_PRODUCT_INFO
ACAD_COLOR
ACAD_DETAILVIEWSTYLE
  Imperial24
ACAD_GROUP
ACAD_LAYOUT
  Layout1
  Layout2
  Model
ACAD_MATERIAL
  ByBlock
  ByLayer
  Global
ACAD_MLEADERSTYLE
  Annotative
  Standard
ACAD_MLINESTYLE
  Standard
ACAD_PLOTSETTINGS
ACAD_PLOTSTYLENAME
  Normal
ACAD_SCALELIST
  A0
  A1
  A2
  A3
  A4
  A5
  A6
  A7
  A8
  A9
  B0
  B1
  B2
  B3
  B4
  B5
  B6
  B7
  B8
  B9
  C0
  C1
  C2
  C3
  C4
  C5
  C6
  C7
  C8
  C9
  D0
  D1
  D2
ACAD_SECTIONVIEWSTYLE
  Imperial24
ACAD_TABLESTYLE
  Standard
ACAD_VISUALSTYLE
  2dWireframe
  Basic
  Brighten
  ColorChange
  Conceptual
  Dim
  EdgeColorOff
  Facepattern
  Flat
  FlatWithEdges
  Gouraud
  GouraudWithEdges
  Hidden
  JitterOff
  Linepattern
  OverhangOff
  Realistic
  Shaded
  Shaded with edges
  Shades of Gray
  Sketchy
  Thicken
  Wireframe
  X-Ray
AcDbVariableDictionary
  CANNOSCALE
  CMLEADERSTYLE
  CTABLESTYLE
  CVIEWDETAILSTYLE
  CVIEWSECTIONSTYLE
  DIMASSOC
  HIDETEXT
  LAYEREVAL
  LAYERNOTIFY